Word Study
idiosyncratic
CIDE DICTIONARY
idiosyncratic, a.
Of peculiar temper or disposition; belonging to one's peculiar and individual character. [1913 Webster]
THESAURUS
idiosyncratic
abnormal, anomalous, appropriate, characteristic, characterizing, connotative, contrastive, crank, crankish, cranky, crotchety, demonstrative, denominative, denotative, designative, deviant, deviative, diacritical, diagnostic, differencing, different, differential, differentiative, discriminating, discriminative, distinctive, distinguished, distinguishing, divergent, dotty, eccentric, emblematic, erratic, evidential, exceptional, exhibitive, expressive, fey, figural, figurative, flaky, freakish, funny, identifying, ideographic, idiocratic, implicative, in character, indicating, indicative, indicatory, individual, individualizing, individuating, intrinsic, irregular, kinky, kooky, maggoty, marked, meaningful, metaphorical, naming, nutty, odd, oddball, pathognomonic, peculiar, personal, personalizing, private, proper, queer, quintessential, quirky, representative, screwball, screwy, semantic, semiotic, separative, signalizing, significant, significative, signifying, single, singular, strange, suggestive, symbolic, symbolistic, symbological, symptomatic, symptomatologic, true to form, twisted, typical, unconventional, unique, unnatural, wacky, whimsicalFor further exploring for "idiosyncratic" in Webster Dictionary Online